Tuesday: Sunny. High: 56°F 

Tuesday Night: Building Clouds, Low: 45°F 

Wednesday: Cloudy. High: 70°F 

Wednesday Night: Clouds clearing, Low: 47°F 

Thursday: Mostly cloudy, High: 65°F 

============================================================================= 

General Discussion: 

The weather in Columbia will be calm for most of Tuesday, with sunny skies prevailing. However, cloud cover will begin to increase late Tuesday night and into Wednesday morning. These clouds are expected to persist throughout the majority of the forecast period, only starting to dissipate late Thursday. This cloud cover will help to maintain relatively stable temperatures in the Columbia area. 

============================================================================= 

Forecasters: Beach, Malone 

Date Issued: April 8, 2025, 10:00 AM Central Standard Time 

Technical Discussion: 

Key Messages: 

• Temperatures this week will remain near the seasonal average. 

• Starting Tuesday, the weather will be considerably calmer compared to recent weeks. 

The stable weather pattern beginning Tuesday is largely due to Columbia’s current position beneath the remnants of an upper-level trough that passed through earlier in the week. Additionally, upper-level atmospheric activity is minimal for Tuesday. At both the 500 and 700 millibar levels, the general airflow is calm, with no significant forcing mechanisms expected for most of the day. However, late Tuesday, divergence at the 300 millibar level will begin to move into the region, providing some lift that will initiate cloud development overnight. This cloud formation will be supported by tightening bands of vorticity also pushing into the area. These clouds are likely to begin forming around 00z Wednesday and will initially be high-altitude clouds. 

Moving into Wednesday, these clouds will thicken and remain for much of the forecast period. Overnight, the cloud cover will help to keep temperatures around the average. Wednesday will also see a shift in winds to a southerly direction as a deepening trough at the 300 millibar level starts to move into the region. As this trough approaches, the previously confined bands of vorticity will become broader and more intense, further contributing to the persistent cloud cover as moisture begins to increase at the 700 and 850 millibar levels. Due to this extensive cloud cover, high temperatures will remain close to the average of 67°F, staying in the high 60s to very low 70s. However, this cloud cover is not expected to last indefinitely, as moisture at the 850 millibar level will begin to decrease later on Wednesday (21z). 

As the moisture decreases, cloud cover will start to dissipate heading into Thursday. This clearing will be aided by the upper-level trough positioning its center over Columbia. Additionally, winds will begin to pick up from the north, somewhat counteracting the typical daytime warming from solar radiation. Future forecasts should monitor the potential for rain later in the week as moisture is expected to build back into the area. 

-Beach